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/*
* $Id$
*
* This file is part of WorkMan, the civilized CD player library
* (c) 1991-1997 by Steven Grimm (original author)
* (c) by Dirk Försterling (current 'author' = maintainer)
* The maintainer can be contacted by his e-mail address:
* milliByte@DeathsDoor.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307 USA
*
*
* Some helpful functions...
*
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <errno.h>
#include <stdarg.h>
#include <sys/time.h>
#include "include/workman_defs.h"
#include "include/wm_config.h"
#include "include/wm_helpers.h"
#include "include/wm_struct.h"
#define WM_MSG_CLASS WM_MSG_CLASS_MISC
int wm_lib_verbosity = WM_MSG_LEVEL_NONE;
/*
* Some seleced functions of version reporting follow...
*/
int wm_libver_major( void ){return WM_LIBVER_MAJOR;}
int wm_libver_minor( void ){return WM_LIBVER_MINOR;}
int wm_libver_pl( void ){return WM_LIBVER_PL;}
char *wm_libver_name( void )
{
char *s = NULL;
wm_strmcat(&s, WM_LIBVER_NAME);
return s;
} /* wm_libver_name() */
char *wm_libver_number( void )
{
char *s = NULL;
s = malloc(10);
/* this is not used very often, so don't care about speed...*/
sprintf(s, "%d.%d.%d", wm_libver_major(), wm_libver_minor(), wm_libver_pl());
return s;
} /* wm_libver_number() */
char *wm_libver_date( void )
{
char *s = NULL;
wm_strmcat(&s, __DATE__);
return s;
} /* wm_libver_date() */
char *wm_libver_string( void )
{
char *s = NULL;
wm_strmcat( &s, wm_libver_name() );
wm_strmcat( &s, " " );
wm_strmcat( &s, wm_libver_number() );
return s;
} /* wm_libver_string() */
/*
*
* Now for some memory management...
*
*/
/* Free some memory and set a pointer to null. */
void freeup( char **x )
{
if (*x != NULL)
{
free(*x);
*x = NULL;
}
} /* freeup() */
/* Copy into a malloced string. */
void
wm_strmcpy( char **t, const char *s )
{
wm_lib_message(WM_MSG_CLASS_MISC | WM_MSG_LEVEL_DEBUG, "wm_strmcpy(%s, '%s')\n", *t, s);
if (*t != NULL)
{
wm_lib_message(WM_MSG_CLASS_MISC | WM_MSG_LEVEL_DEBUG, "wm_strmcpy freeing pointer %p\n", *t);
free(*t);
}
*t = malloc(strlen(s) + 1);
if (*t == NULL)
{
perror("wm_strmcpy");
exit(1);
}
wm_lib_message(WM_MSG_CLASS_MISC | WM_MSG_LEVEL_DEBUG, "wm_strmcpy finally copying (%p, '%s')\n", *t, s);
strncpy(*t, s, strlen(s));
} /* wm_strmcpy() */
/* Add to a malloced string. */
void
wm_strmcat( char **t, const char *s)
{
int len = strlen(s) + 1;
wm_lib_message(WM_MSG_CLASS_MISC | WM_MSG_LEVEL_DEBUG, "wm_strmcat(%s, %s)\n", *t, s);
if (*s == '\0')
return;
if (*t != NULL)
{
len += strlen(*t);
*t = realloc(*t, len);
if (*t == NULL)
{
perror("wm_strmcat");
exit(1);
}
strcat(*t, s);
}
else
wm_strmcpy(t, s);
} /* wm_strmcat() */
/* Duplicate a string. Some systems have this in libc, but not all. */
char *
wm_strdup( char *s )
{
char *new;
new = malloc(strlen(s) + 1);
if (new)
strcpy(new, s);
return (new);
} /* wm_strdup() */
/*
* set and get verbosity level.
*/
void wm_lib_set_verbosity( int level )
{
if( WM_MSG_LEVEL_NONE <= level && level <= WM_MSG_LEVEL_DEBUG )
{
wm_lib_verbosity = level;
wm_lib_message(WM_MSG_CLASS_MISC | WM_MSG_LEVEL_DEBUG, "Verbosity set to %d|%d\n", WM_MSG_LEVEL_DEBUG, level & WM_MSG_CLASS_ALL);
}
} /* wm_lib_set_verbosity */
int wm_lib_get_verbosity( void )
{
return wm_lib_verbosity;
}
/*
* wm_lib_message().
*
* any message that falls into allowed classes and has at least
* verbosity level wm_lib_verbosity & 0xf will be printed.
*
* Usage:
*
* wm_lib_message( WM_MSG_LEVEL | WM_MSG_CLASS, "format", contents);
*
* To simplify the usage, you may simply use WM_MSG_CLASS. It should be
* defined in each module to reflect the correct message class.
*
*/
void wm_lib_message( unsigned int level, const char *fmt, ... )
{
va_list ap;
/* verbosity level */
unsigned int vlevel = wm_lib_verbosity & 0xf;
/* allowed classes */
unsigned int vclass = (level & WM_MSG_CLASS_ALL) & (wm_lib_verbosity & WM_MSG_CLASS_ALL);
/*
* just give me the level
*/
level &= 0xf;
if(level <= WM_MSG_LEVEL_NONE)
{
fprintf(stderr, "LibWorkMan warning: A LibWorkMan programmer specified an invalid message level.\n");
}
/*
* print it only if level and class are allowed.
*/
if( (level <= vlevel) && (vclass != 0) )
{
fprintf(stderr, "libWorkMan: ");
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
}
} /* wm_lib_message() */
/*
* Simulate usleep() using select().
*/
int
wm_susleep( int usec )
{
struct timeval tv;
timerclear(&tv);
tv.tv_sec = usec / 1000000;
tv.tv_usec = usec % 1000000;
return (select(0, NULL, NULL, NULL, &tv));
} /* wm_susleep() */
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